Raman sideband cooling of rubidium atoms in optical lattice

doi:10.1088/1674-1056/26/8/080701

中国物理B ›› 2017, Vol. 26 ›› Issue (8): 80701-080701.doi: 10.1088/1674-1056/26/8/080701

Raman sideband cooling of rubidium atoms in optical lattice

Chun-Hua Wei(魏春华), Shu-Hua Yan(颜树华)

1 College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha 410073, China;
2 Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China

收稿日期:2017-02-23 修回日期:2017-05-03 出版日期:2017-08-05 发布日期:2017-08-05
通讯作者: Shu-Hua Yan E-mail:yanshuhua996@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 51275523), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20134307110009), the Graduate Innovative Research Fund of Hunan Province, China (Grant No. CX20158015), and the Excellent Graduate Innovative Fund of National University of Defense Technology (NUDT) (Grant No. B150305).

Raman sideband cooling of rubidium atoms in optical lattice

Chun-Hua Wei(魏春华)^1,2, Shu-Hua Yan(颜树华)^1,2

1 College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha 410073, China;
2 Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China

Received:2017-02-23 Revised:2017-05-03 Online:2017-08-05 Published:2017-08-05
Contact: Shu-Hua Yan E-mail:yanshuhua996@163.com
About author:0.1088/1674-1056/26/8/
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51275523), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20134307110009), the Graduate Innovative Research Fund of Hunan Province, China (Grant No. CX20158015), and the Excellent Graduate Innovative Fund of National University of Defense Technology (NUDT) (Grant No. B150305).

摘要/Abstract

摘要：

We develop a simple and practical scheme to apply sideband cooling to a cloud of rubidium atoms. A sample containing 4×10⁷⁰ ⁸⁷Rb is trapped in a far red detuned optical lattice. Through optimizing the relevant parameters, i.e., laser detuning, magnetic field, polarization, and duration time, a temperature around 1.5 μK and phase space density close to 1/500 are achieved. Compared with polarization gradient cooling, the temperature decreases by around one order of magnitude. This technique could be used in high precision measurement such as atomic clocks and atom interferometer. It could also serve as a precooling means before evaporation cooling in a dipole trap, and may be a promising method of achieving quantum degeneracy with purely optical means.

关键词: atom cooling, optical lattice, sideband cooling

Abstract:

Key words: atom cooling, optical lattice, sideband cooling

中图分类号: (Design of experiments)

07.05.Fb

37.10.De (Atom cooling methods) 37.10.Jk (Atoms in optical lattices)

魏春华, 颜树华. Raman sideband cooling of rubidium atoms in optical lattice[J]. 中国物理B, 2017, 26(8): 80701-080701.

Chun-Hua Wei(魏春华), Shu-Hua Yan(颜树华). Raman sideband cooling of rubidium atoms in optical lattice[J]. Chin. Phys. B, 2017, 26(8): 80701-080701.

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Raman sideband cooling of rubidium atoms in optical lattice

Raman sideband cooling of rubidium atoms in optical lattice

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